use this link to delete the accont.
do not log in for 24 hours.
create the account again after 24 hours.
the mail would go away but unfortunately you cant stop receiving them on your new id
Do you not have your spam filter on?
If you get your spam mail to go to the spam inbox, It will delete it in 2 weeks if you set it! And the spam won't go to your mailbox! Then you can take your time, and delete the mail in your inbox!